I'm sure this storyline was done before with Mr Mead and was it Vicky McDonald?

Yeah It was, and the whole "Boob Job" story was done as recent as the last 10 episodes of last series, with Lauren Andrews, all wrapped up in one episode in both circumstances too.
I'm really enjoying this story with Scout/MsBoston and Kevin is a good character even though hes being a bit of a dick to Chalky..